There are total 5 hours or 300 minutes from 4pm to 9pm. In words, this duration is equal to five hours or three hundred minutes.
How many hours from
| 1PM to 5PM | 11PM to 10PM | 4AM to 5PM |
| 10PM to 5PM | 6PM to 12PM | 9PM to 6AM |
| 2AM to 8PM | 12AM to 3PM | 2PM to 6AM |
| 8AM to 1AM | 5PM to 11AM | 3PM to 2PM |
| 12AM to 1AM | 4AM to 6PM | 6PM to 10PM |
| 11AM to 9AM | 9PM to 5AM | 10PM to 12AM |
